Acoustica - Acoustica is an audio editing tool for editing, mastering and restoration work on both Mac and PC.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
keezy - A colorful soundboard. Play with music.
Magix SpectraLayers - SpectraLayers Pro transforms sound into a unique visual world of multidimensional audio data.
Splice - Music creation, collaboration, and sharing made simple.